to investigate whether the qualification tests and acceptance tests were appropriate in relation to the problem encountered,

to investigate whether the qualification tests and acceptance tests were appropriate in relation to the problem encountered,

to investigate whether the qualification tests and acceptance tests were appropriate in relation to the problem encountered,

to investigate whether the qualification tests and acceptance tests were appropriate in relation to the problem encountered,

Step 3 will last about 2 months, during which the commissioning tests will be performed and preparations will be made for raising the orbit.

State acceptance trials were completed in 1984, and deliveries began the same year to the Soviet Frontal Aviation.

State acceptance trials were completed in 1984, and deliveries began the same year to the Soviet Air Force.

Unlike traditional pre-flight acceptance testing, no test-bed is available to exactly replicate the current scenario.

Unlike traditional pre-flight acceptance testing, no test-bed is available to exactly replicate the current scenario.

Had such a test been performed by the supplier or as part of the acceptance test the failure mechanism would have been exposed.

Had such a test been performed by the supplier or as part of the acceptance test, the failure mechanism would have been exposed.